Single acting sheet feinting peess



(No Model.) 8 Sheets-Sheet 1.

J. L. COX.

SINGLE ACTING SHEET PRINTING PRESS. N0. 529,519. Patented Nov. 20, 1894.

Inventor:

Jbs eph L. Cox

By his- Jflornys: W 7M (No Model.) a Sheets-Sheet 2.

J. L. COX. SINGLE ACTING SHEET PRINTING PRESS. No. 529,519. PatentedNov. 20, 1894.

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J. L. COX. SINGLE ACTING SHEET PRINTING PRESS. No. 529,519. PatentedNov. 20,1894.

Joseph L. Cox

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J. L. COX. SINGLE AGTING SHEET PRINTING PRESS.

Inventor:

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Patented Nov. 20, 1894.

1 By lzlls Jflarnqys:

(No Model.) 8 Sheets-Sheet 5. J. L. 00X. SINGLE ACTING SHEET PRINTINGPRESS. No. 529,519.

Patented Nov. 20, 1894.

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(No Model.) 8' Sheets-Sheet 6.- J. L. 00X.

SINGLE AGTING SHEET PRINTING PRESS.

Patented Nov. 20, 1894.

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J. L. 002. a SINGLE 'AGTING SHEET PRINTING PRESS. No. 529,519. PatentedNOVQZO, 1894K lf'lmesses: a?! fiwentar:

(No Model.) 8 Sheets-Sheet 8.

J. L. COX.

SINGLE ACTING SHEET PRINTING PRESS.

No. 529,519. Patented Nov. 20, 1894.

ETED STATES Arafat @rrrcs.

JOSEPH L. COX, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO THE DUPLEXPRINTING PRESS COMPANY, OF SAME PLACE.

SINGLE-ACTING SHEET PRINTING PRESS.

. SPECIFICATION forming part of Letters Patent No. 529,519, datedNovember 20, 1 894.

' Application filed July 25,1893. $eria1No. 481.429. (No model) To ctZZwit/0122, it may concern.-

Beit known that LJOSEPH L. COX,0f Battle Creek, in the county of Calhounand State of Michigan,have invented certain new and useful Improvementsin Single-Acting Sheet- Printing Presses; and I do hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing had to p the accompanying drawings, and to the let- IO ters ofreference marked thereon, which form part of this specification.

My present invention is a single acting sheet printing press, employinga stationary bed andalocomotive cylinder which is thrown off while beingtraveled in one direction.

It consists in the novel construction of the throw-off mechanism, thesheet feeding mechanism; the sheet delivery mechanism; in the novelcombinations of such mechanisms; and

:o in other novel details of construction, combination, and arrangementof parts hereinafter fully described and clearly shown in theaccompanying drawings, in which- Figure 1 is a side elevation of thepress showing the carriage about midway of its travel toward the feedend of the machine, the main driving gear and crank wheels revolving inthe direction of the arrows. Fig. 2 is an enlarged transverse sectionalview of the press on line 22 of Fig. 1 looking in the direction of thearrow. Fig. 3 is a detail side View showing the mechanism for revolvingthe ink roll in operating position. Fig. 4 is a transverse sectionalview on line et4 Fig.

5 1 looking in the direction of the arrow. Fig. 5 is a centrallongitudinal sectional view of the whole machine, broken away in thecenter of the bed, showing the cylinder at the full limit of its traveltoward the feed end of press, and the cylindergrippers gripping thepaper. Fig. 6 is an enlarged side elevation of the delivery half of thepress, the upper rear portion of the frame being broken away. In thisfigure, the carriage the upper portion 5 of which is broken away, isnearly at the limit of its rearward travel, and the delivery grippersare shown open ready to receive the paper when theyshall have beentripped by the short cam on the periphery of the off crank 5:: wheelmoving from beneath the roller on the lower end of the verticallymovable slotted lever, and showing further the roller on inner side ofthe crank wheel about to engage the rear swinging cam thereby forcingthe arm forward that trips the cylinder gripper shaft to release thesheet. Fig. 7 is a detail perspective view of the delivery grippers.Fig. 8 is a detail edge and side view of the forward swinging cam. Fig.9 is a detail transverse sectional view taken through line 9-9 Fig. 4,showing the means for forcing the wedge forward thus allowing thecylinder to be thrown off impression. Fig. 10 is a detail plan view ofone side of the rear upper portion of the frame showing theinterineshing gears on 55 the delivery gripper shafts, the frictionbearings of the stripper shaft, and the relative position of the trip onsaid stripper shaft, and the collar on the rear delivery gripper shaftwhich operates said trip. Fig. 11 is a .detail transverse sectionthrough line 1l-1l Fig. 9. Fig. 12 is a similar View through line 12-12Fig. 11, showing in full lines the pawl forced in engagement with theratchet wheel fixed to the front canvas belt carrying shaft 7 throughthemedium of the friction leather at opposite end of shaft, by the rearwardmovement of the carriage in the direction of the full lined arrow, andshowing in dotted lines the disengagement of the pawl through the mediumof the aforesaid leather, when the carriage travels in the direction ofthe dotted arrow. Fig. 13 is a detail side view showing disk'on shaftand the rubber bearing on same. Fig. 14 is a plan view of the rubberarm. Fig. 15 is a detail end elevation partly in section, of thecylinder in connection with the delivery grippers, showing the papergripped bythe same when the cylinder has traveled the slight distancerearward go from the position shown in Fig. 6. Fig. 16 is a detail viewin perspective of the notched bar, and Fig. 16 is a detail edge view ofthat part of the cylinder to which said bar is secured. Fig. 17is an endview of the cylinder looking from the off side of the press, showing thedevices for tripping the cylinder grippers and causing them to assumethe position shown in Fig. 15. Fig. 18 is a detail view of said cylindergripping devices.

a detail sectional view of the rear edge of feed board showing in dottedlines the trip Fig. 19 is Ioc for raising same out of the way of thecylinder. Fig. is a detail perspective view of front edge and portion ofside of feed board. Fig. 21 is a detail view of the spring-actuated triis shown in the drawings the press has a single, stationary horizontalflat type bed arranged midway of the machine, a feed table at one end ofthe machine, and a delivery table at the opposite end thereof. Beneaththis table above the level of the type bed is an ink fountain, and abovethe table is a novel sheet delivering apparatus.

The impression cylinder is provided with grippers and is journaled inreciprocating carrier castings at each side of the machine, saidcastings being supported and guided in ways on the main frame andsliding back and forth alongside the bed, reciprocating the impressioncylinder causing it to make one complete revolution over the bed andstop with its grippers uppermost at each end of its stroke.

The cylinder is provided with novel devices for throwing it 06 and onimpression, so that it prints goingin one direction only, and gives upthesheet as it moves in the contrary direction. Form inking rollers andink distributing rollers are journaled in the carriers at one side ofthe 0 linder next the delivery board so as to be supplied with ink fromthe fountain above mentioned.

The carriers are reciprocated back and forth by means of reciprocatinggears which mesh with racks on the lower side of the carriersandstationary racks on the main frame, the gears being reciprocated bymeans of pitmen connected to crank wheels on the main shaft. Thisconstruction enables me to give the necessary movement to the carrierswith small crank wheels, and relieves the carriers from the varyingstrains or pressures incident to the reciprocation of the pitmen by thecrank wheels.

Referring to the drawings by letter, A designates the main frame, B thetype bed, and O the impression gripper cylinder journaled in carriercastings D, D, one at each side of the machine having lugs D thatenter-guide grooves A in the sides of the main frame. The'cylinder isprovided with bearer flanges 0' running upon bearers B on the bed, andwith a gear meshing with a bed rack B as is usual in bed and cylinderpresses. At each side of the cylinder are guards O to prevent smearingor falling of the sheet which is carried around the cylinder duringimprinting without tapes. The shaft of the cylinder is journaled invertically movable boxes 0 in castings D, which boxes are forced upwardby means of springs c which can be adjusted by screws 0 as indicated inFigs. 1, 4: and 9.

- When the boxes are raised by the springs the cylinder is also raisedoff the type plane and thrown ofi impression. The boxes are for ced downhowever against the tension of the springs and held down during onemovement of the cylinder from right to left while the impression isbeing made by means of sliding tapered keys E, placed in longitudinalgrooves over the journal boxes 0 lying horizontal and at right angles tothe cylinder, as shown clearly in Figs. 1, 4 and 9. These keys arealternately shifted back and forth as the cylinder reciprocates, bymeans of tappets located at opposite ends of the beds and hereinafterdescribed. The larger ends of keys E have a depending stud E which isdouble beveled on its end, and engages with the similarly beveled headof a spring-actuated locking pin E as shown, by which the key is lockedwhen shifted in either direction so as to prevent a casual displacementthereof. An adjusting bolt E is tapped through this lug E for regulatingthe position of-the key. The cylinder is also provided with a set ofgripping fingers e mounted on a shaft e on the end of which is a smallpinion e which meshes with a sector e which is rocked back and forth bycontacting tappets at the feed and delivery ends of press, and therebycloses or opens the gripper fingers. On the end of the cylinder grippershaft is also mounted a short crank arm 6 to which is pivotallyconnected one end of a spring controlled rod which plays through arocking guide 6 on the end of the cylinder and is forced toward the rockshaft by the spring e By this arrangement the gripper fingers are heldopen or closed after they are shifted, as the crank arm swings past thedead center; '5. e, a direct line between the axis of gripper shaft andguide e .On the lower edges of carriers D are secured inverted racks Dwhich are meshed by reciprocating gears D which mesh with racks A on themain frame. These gears are provided with bearer flanges D which runupon bearers A on the main frame, and relieve the gear and rack teeth ofweight. The gears are journaled on a transverse shaft D which isreciprocated back and forth by means of pitmen D connected to crankwheels F,f fixed on the main shaft A at opposite sidcsof the main frame.Said main shaft may be driven from any suitable power in any suitablemanner. As shown I have cut gear teeth on crank wheel F and drive it bya small pinion on an auxiliary shaft A which is provided with beltpulleys as indicated in Figs. 1 and 2 of the drawings. The crank wheelsare preferably rotated in the direction of the arrows (to the right). sothat the thrust and weight of the pitmen will be upon the gears D andthereby transferred to the main frame and not to the carriers.

The gripper-actuating sector is tripped at the feed end of the press soas to close the cylinder gripper fingers by a horizontal longitudinallymovable tappet bar G playing through guide loops or brackets on the feedboard supports and alternately thrown forward or backward by a vibratinglever .G' pivoted thereto at one endandat its other end tothe mainframe. This-leverG'inturn is vibrated by means of a rod G which connectsit with a swinging cam lever G (see Fig. 8) which is hung on a pin atthe off side of the machine next the off crank wheelf.

On the outer face of lever G is adjustably secured a cam block G whichstands in a position to be engaged and shifted by a roller f on wheel f,which roller may be mounted on the inner end of the crank-pin F of saidcrank-wheel. The cam lever G3 is pushed forward by means of a spring Gso that tappet bar G will be normally kept out of position forcontacting the sector a and will be suddenly projected forward to shiftsaid sector when the cylinder has reached its eX- treme right-handmovement and is stopped during the time the crank wheels are passing theforward deadcenter; thus permitting ampl time for the sheet to be fed tothe cylinder and properly adjusted before the gripper fingers are closedthereon.

The feed-board H resembles an ordinary feed board and is hinged orpivoted as at H so that its inner or delivery end can be raised andlowered. The inner end of the board is beveled as at H (see Figs. 5, l9and 20) and is provided with a metallic shield piece H which has aseries of notches H in its front edge to permit the cylinder fingergrippers to close upon the sheet while it lies upon the table.

0n the carriers D at the right hand side of the cylinder are two or moredogs 01 mounted on a shaft d and normally kept in vertical position bymeans of springs 61 and stops (1 which prevent backward turning of thedogs. (See Figs. 5, l9 and 21.) As the cylinder reaches the end of itsright hand stroke (toward the feed board) these dogs engage the lowerbeveled edge of the feed board and lift it so that the sheet of paper islifted out of the way of the cylinder so that it will not be disturbedthereby. \Vhen the cylinder completes its backward stroke, the dogs dslip into notches H in the under side of the feed board and the latterdrops so as to lay the edge of sheet onto the cylinder in position to begripped. When the cylinder moves forward (toward the delivery) thesprings allow the dogs to turn on shaft d and slide from under theboard. The under edge of board may be protected by metal plates H wherethe dogs contact therewith.

I designates a rock shaft lying transversely over the front edge of thefeed board and journaled in brackets h attached thereto. On this shaftare secured the paper stops. The stops are shown most clearly in Figs.19 and 20. It will be noticed that each stop consists of a bent rode thestraight portion of which is screw-threaded and passes through openingsin a bifurcated lug t depending from a sleeve on the shaft I, so thatred 2' stands at right angles to the shaft. A thumb nut is placed on therod '5 between the bifurcations 1" so that the rod 2' can be ad rod '2and sleeve 2' may be locked in position usted, and both by set screws '52", respectively. On the extremity of the curved portion of rod '5 isaffixed the stop piece The shaft I is turned so as to normally holdstops '6 against the teeth on piece H of the table, (see Figs. 19 and20) by means of a spring controlled rod 1 playing through a guidebracket h on the feed table, and pivotally connected to a crank arm I onshaft I, at one end, and to a bell crank lever I at its other end whichis pivoted upon the table H as shown, a spring I being slipped on rod Ibetween bracket h and a collar on the rod as shown. From the foregoingit will be seen that the stops are movable with and supported by thefeed table.

The bell crank lever I is shifted at the proper time so as to rock shaftI and throw the stops outof the'way by means of a vertically movable rodJ playing through guide lugs on the main frame and pivotally connectedat its lower end to an arm J secured to the outer end of a stub shaft J.on the inner end of which is a crank arm J? (at right an gles to arm Jwhich is connected to one end of a rod J which extends forward to andbeyond the main shaft, and its other end is connected to a crank arm jfixed on a stub shaft j journaled in the side of the frame, justexterior to the periphery of crank Wheelf, and on the outer end of shaftj is fixed a crank arm 7' which has a rollerj on its outer end runningupon the periphery of crank wheelf and adapted to be engaged by a longcam f on the periphery thereof as indicated in Fig. 5, said camextending about half way around the periphery of said crank wheel. Bythis means the stops are positively lifted out of the way during theforward stroke of the cylinder, while the sheet is being drawn off theboard, and are then permitted to drop in position to allow the feeder toadjust a new sheet upon the feed board. A spring J is put on rod J toforce it down when rollerj is off cam f When the cylinder reaches theforward limit of its travel, the gripper fingers thereof are opened bymeans of a tappet bar K which engages sector e as indicated in Fig. 6.This bar is mounted in suitable guides on the frame of the deliverytable and is recipro cated at the proper times by means of a vibratinglever K fixed on the inner end of a short rock shaft K journaled in theframe beside crank wheel f, and on the outer end of shaft K is secured adepending lever K to the outer face of which is secured an adjustablecam block K (see Figs. 2 and 6) which cam block is contacted by therollerf on the crank pin f of wheelf. The cam block K is aboutdiametrically opposite the cam block G so that the cylinder grippers arealternately opened and closed by the direct action of these camsalternately during the revolution of these crank wheels. The

cam however is so arranged that the cylinder grippers will not be openeduntil the delivery grippers have nipped the sheet.

A rod K is IIO . inder and throw it off impression.

pivotally connected to lever K and plays through guides on the frame,and a spring K is arranged on this rod so as to cause the retraction ofbar K when the roller 7' disengages the cam block K thus holding tappetbar K out of operative position.

the inner shaft, and the grippers M are the upper grippersand aremounted on the rear shaft curving over the shaft I in position to engagewith the adjoining gripper L. (See Figs. 5, 6, 7, 10, and-15.) Thesegrippers may be faced with rubber or other suitable facing to insure apositive bite on the sheet. The gripper shafts Z, m.are provided withintermeshing pinions Z m .at one end so that theyare simultaneouslyrocked in opposite directions thereby closing or unclosing the grippers.Shaft 1% has a crank m. 'n one end to which is pivoted one endof a rod mthe other end of which is connected to an arm of a bell crank lever mpivoted on the side of the frame above crank wheelf, the short arm'oflever m being pivoted to a vertically movable lever m which is guided bya pin m playing through a slot therein, and has on its lower end aroller m whichruns upon the periphery of crank wheel f and is adapted toengage ashort cam f on the peripery thereof beside the long cam f. (SeeFig. 6;) Aspring m is arran ed on rod in so as to assist in normally hoding the grippers L, M, closed, except when roller m is on cam f. Thecam 4 isso located that it causes grippers L, M,

,to open just as the cylinder reaches the forward end of its stroke.(See Fig. 6.) Grippers L are then in position to enter between thecylinder gripper fingers, and beneath the edge of the sheet, when thecylinder has reached its extreme forward movement stopping with thegrippers uppermost, the camf moves from beneath levers m and grippers L,M, close upon the edge of sheet, and immediately thereafter the cylindergrippers are caused to release the edge of sheet as above described,these actions taking place while the crank pins are passing the forwarddeadcenters.

To facilitate the proper gripping of the sheet by fingers L, M, thecylinder may be provided with a toothed bar 0 (see Figs. 4, 5, 6, and16) between the teeth of which, grippers L enter, while the cylindergripper fingersbitethepaperagainsttheteeththereof.

As the cylinder reaches the forward limit of its stroke,the keys E areforced out by tappetsA affixed to the main frame as shown, therebyallowing the springs to raise the cyl- To assist this .action of thesprings and insure the throw off, the bearers on the bed are slightlyinclined upward at their forward extremities as indicated at 8?, Fig. 6,so that the cylinders will be positively lifted 0E impression, and thesprings will sustain them in nonprinting position during their backwardmovement over the bed, until just before they reach the feed table, thekeys E are driven in by tappets E which are preferably mounted on arock-shaft E which can be rocked by a pivoted lever E and connecting rodE (shown in Figs. 1 and 5) so as tothrow these tappets out of operativeposition when it is not desired to have the cylinder print thus enablingthe pressman to work up ink on the forms and form rollers withoutprinting; and the feeder to throw off the impression, when missing asheet-to prevent soiling the make ready or cylinder packing. In theirnormal position however tappets E will contact keys E and force them in.thus throwing the cylinder on impression or into printing position. Tothe carriers Dat the delivery side of the cylinder are connected twobars 0, O, which extend rearward land are connected to a transverseshaft 0 on the ends of which are wheels 0 running upon ways 0 fixed tothe side frames. (See Figs. 1, 5, 6, and 10.) These bars 0 ,and shaft 0'constitute a sheet delivery carriage. In the forward ends of bars 0 isjournaled a transverse shaft P, and near the rear ends of said bars is atransverse shaft 9 journaled in brackets 19' adjustably attached to thebars 0. An endless belt 0 is run over shafts P, p, as shown in Figs. 2and 5, and is turned in the direction indicated by the arrows in Figs. 1and 5 by means of a pinion P on the end of shaft P meshing with a gear 0on one end of the cylinder. (See Figs.1and9.) It isdesiredto rotateshaft P only in one direction and as the cylinder is traveling backward,therefore I employ a clutch device, illustrated in Figs. 11 to 14:arranged as follows: The pinion P is loose on shaft P beside the pinionbut fixed on the shaftisa small ratchet P whose hub is extended like asleeve at the side opposite pinion P, andon the extended portion isloosely fitted a ring Q which is confined in place by a collar Q. A dogQ is pivoted on thezinner face of the collar (see Figs. 11 and 12) andto one end of the dog is pivotedone end of curved link Q the other'endof which is pivoted to a pin P on the inner face of pinion P. Of courseas the cylinder reciprocates backward and forward the pinionP is turnedback and forth in a direction contrary to the rotation of the cylinder.When the cylinder travels forward, the pinion P is rotated inthedirection indicated by the dotted arrow in Fig. 12 on the collar Q (thepinion P and the collar being connected by the dog 2 and link Q Thisrotation of the pinion P pulls the link Q and it in turn oscillates dogQ so that the latter is thrown out of engagement with ratchet P asindicated in dotted vlines Fig. 12, and consequently shaft P is notrotated during the forward movement of the cylinder. In order to preventthe shaft turning casually, by the friction of the pinion and collarthereon, I employ a brake device consisting of a lever q pivoted on oneof the bars 0 and having a leather g on one end which bears upon theperiphery of a small collar P fixed to shaft P on the end opposite thepinion P. The friction of the leather q may be regulated by an adjustingscrew g in the outer end of lever q. The friction of this leather is notsnfficient however to affect the positive rotation of the shaft P by theclutch devices.

\Vhen the cylinder moves backward, the link Q causes dog Q to oscillateand positively engage the ratchet as indicated in full lines Fig. 12. Bythis construction a noiseless but positive acting ratchet and pawlclutch is produced. Now after the cylinder has completed its impressionstroke, and has been thrown off, and the imprinted sheet has been nippedby the grippers L, M, as above described, the cylinder begins itsbackward movement, and the sheet of paper is pulled from the cylinder bythe grippers L, M, and dropped upon the belt which is moved forward withthe cylinder, and beneath the grippers L, M. When the cylinder movesforward on its printing stroke, the carriage moves back beneath thegrippers L, M, to and over the delivery board R carrying the previouslyprinted sheet, face uppermost lying upon the belt 0 which is stationaryduring the forward stroke of the cylinder. The newly imprinted sheet isgrasped by the grippers L, M, and as the cylinder again moves backward,the last imprinted sheet is drawn from the cylinder, and simultaneouslythe previously imprinted sheetis dropped upon the delivery board R belowthe carriage, as belt 0 is traveled in the direction of the arrows, bythe rotation of shaft P, simultaneously with the bodily forward movementthereof with the delivery carriage. In brief, the sheet is carried backover the delivery table bya non-traveling belt during the forward strokeof the cylinder, and is then dropped upon the delivery table by thecarriage moving from beneath the sheet, and the belt itself beingrotated while traveled at such speed as to cause it to unwind or movefrom beneath the sheet which falls by gravity upon the delivery table(as indicated in dotted lines Fig. 1)the carriage slipping from beneathone sheet simultaneously as it moves under another sheet.

In order to strip the sheet from the grippers L, M,I mount a rock-shaftS on the rear end of the bars 0, O, and to it attach a number ofupwardly curved tongues S which pass between the adjoining pairs ofgrippers L, M, when the carriage is at the forward limit of itsmovement.Theshafthastwospringcams s, s at opposite sides and ends thereof, thefirst of which passes under a stop or roller 3 on the end of shaft mwhen the carriage finishes its inward movement and is thereby depressedso that tongues S are turned down upon the belt, stripping the edge ofthe sheet from the grippers L, M, (which are just previously opened) andretain the sheet upon the belt (which is then stopped) until thecarriage has completed its outward movement, when cam 5 passes under astop or roller 3 journaled on a bracket on the main frame, and rocksshaft S so as to raise the tongues and free the sheet as indicated inFig. 6.

The inking fountain T is mounted beneath the delivery-board and is ofany suitable construction. The fountain roller has a ratchet i on oneend which is engaged by a pawl T pivoted on a vibrating arm T which ispivoted to the upper end of a vertically movable lever T which ispressed upward by a spring T (See Figs. 1, 2 and 3.) The lower end oflever T is slotted to fit upon a guide pin A fixed to the main frame. Afriction roller T is secured to the outer face of lever T in position tobe engaged by a short cam F on the crank wheel F, so that the fountainroller 25 is rotated once for each impression produced.

The form inking rollers U, U, are jourualed on the castings D at theside of the cylinder next the delivery table and are supplied with inkby a distributer D receiving ink from a su perimposed roller U which issupplied with ink by a ductor roller U which however is kept in contactwith'roller U but is adapted to contact the fountain roller when thecarriers are at the end of their extreme forward movement,the fountainrollert being rotated by the means described just as and while roller Ucontacts therewith. A distributer roller U may be journaled above rollerU and rollers U and U may be provided with screw-threaded journals so asto vibrate them simultaneously with their rotation, as in the ordinaryrack and screw distribution inking rollers. The roller U may bepositively rotated by intermeshing pinions from the rack on the typebed, and the other rollers may also be intergeared so as to bepositively r0 tated. Rollers U, U, and U are preferably mounted inadjustable bearings, but it is not new to do this.

V designates a hand lever at the feed end of the press fixed on one endof a rock shaft V which is connected at its otherend to the beltshifting devices so that the feeder can startor stop the machine atwill. In operation the cyl inder takes a sheet from the feed board,makes one revolution over the bed, during which it makes the impression,is thrown off at the delivery end of press, and the sheet is withdrawnfrom the cylinder by the stationary delivery grippers during thebackward movement of the cylinder (while it is thrown off) and laid uponthe delivery belt, and during the next forward stroke of the cylinder(imprinting a second sheet) the first sheet is carried back over thedelivery table, and during the backward movement of the cylinder thefirst sheet is delivered on to the delivery board by the action of theendless belt on the delivery carriage, while the second imprinted sheetis being withdrawn from the cylinder, the impression cylinder beingalternately thrown off and on impression at the feed and delivery endsof bed, and the inking rollers rolling on the forms in both the forwardand backward movements of the cylinder; all as hereinbefore described indetail.

It will be readily understood that many of the parts and combinations ofparts which I have'above described and shown in drawings can be readilyadapted for use as or on aweb printing machine, and therefore I desireto embrace them wherever used in any kind of printing, press.

Having described my invention, what I claim as new, and desire to secureby Letters Patent thereon, is

1. In a printing press the combination of a bed, a reciprocatingcylinder, and means for holding said cylinder off impression during itsreturn stroke; with inclined portions or planes at one end of thecylinder-bed-bearers for raisingsaid cylinders off impression, and meansfor holding said cylinder in impression on the forward stroke,substantially as described.

2. In a printing press the combination of a stationary bed, and areciprocating cylinder and springs for holding said cylinder offimpression during its return stroke; with inclined portions or planes atone end of the cylinder, bed bearers for lifting said cylinder oftimpression, and means for alternately compressing and releasing saidsprings, substantially as described.

The combination of the reciprocating gripper cylinder, thegripperactuating sector pivoted to one end thereof and the tappet barsat opposite ends of the press, with a rotating wheel, the swinging camlevers arranged near the said wheel and adapted to be alternatelyshifted by a pin on said wheel, and the connections substantially asdescribed between the respective cam levers, and the tap pet bars atopposite ends of the press, substantially as and for the purposedescribed.

4. The combination of the reciprocating gripper cylinder and the gripperactuating segment pivoted to the end thereof, substantially asdescribed; with the tappet bar G lever G rod G and swinging cam lever Gand a rotating wheel adapted to operate said cam lever, substantially asand for the purpose herein specified.

5. The combination of the reciprocating gripper cylinder and the gripperactuating segment pivoted on the end thereof, substantially asdescribed; with the tappet K, lever K and cam lever K and a rotatingwheel adapted to operate said cam lever, substantially as described.

6. The combination of the reciprocating cylinder, its gripper mechanismsubstantially as described, the opposite tappet barsG and K for shiftingsaid grippers, and the crank wheels and connections substantially asdescribed for reciprocating said cylinder; with the swinging camcarrying levers G and K suspended about diametrically opposite eachother beside one cam wheel, the wrist-pin on said wheel adapted toalternately engage and operate the said cam levers, and the connectionssubstantially as described between the lever G and bar G, and betweenlever K and bar K, all substantially as and for the purpose set forth.

7. In a printing press the combination with the bed and cylinder of aswinging lever, an adjustable cam block'attached to said lever, springsfor forcing said lever in one direction, and a pin on a rotating wheeladapted to intermittently engage said cam block and shift the lever inthe opposite direction and a gripper mechanism operated from said lever,substantially as described.

8. In a printing press the combination of a stationary bed, areciprocating gripper cylinder, springs for lifting said cylinder offimpression, devices for alternately compressing and releasing saidsprings, a main shaft and connections for reciprocating said cylinder,and the gripper shifting tappet bars at opposite ends of the press, andthe swinging cam levers and connections for alternately operating saidtappet bars, said camlevers being alternately operated by a pin onacrank wheel of the main shaft, substantially as described.

9. The combination of the reciprocating carriers, the cylinder journalboxes thereon, thesprings for upholding said boxes, the longitudinallymovable wedge keys over said boxes, devices for locking the wedges whenshifted and the cylinder journaled in said boxes, and the tappets foralternatelycontacting and shifting said keys, substantially asdescribed.

10. The combination of the cylinder, its journal boxes, the springs forlifting said boxes, the longitudinally movable wedge keys for depressingsaid boxes, and the spring-act uated bolts for locking said keys whenshifted,

substantially as described.

11. The combination of the reciprocating gripper cylinder, with thegrippers mounted on rock shafts 'journaled in fixed hearings on theframe; the mechanism substantially as described whereby said grippersare automatically closed upon the sheet when the cylinder finishes itsforward stroke and draw the sheet from the cylinder as it travelsbackward to the feed end of press and meansfor subsequently carrying thesheet behind the grippers and dropping it upon the delivery table, subsantially as described.

12. The combination of the reciprocating gripper cylinder, the deliverycarriage reciprocated with said cylinder, the delivery grippers mountedon the main frame above the carriage and adapted to grip the sheet whenthe cylinder reaches the end of its forward stroke and draw it from thecylinder onto the delivery carriage as the cylinderand carriage movebackward, and means for r'emovingthe sheet from the carriage during thenext backward movement of the cylinder, substantially as described.

13. The combination of the reciprocating cylinders, and deliverycarriage moving therewith, an endless belt on said carriage, and meanssubstantiallyas described wherebysaid belt is traveled only during thebackward movement of the cylinder; with grippers adapted to pull theimprinted sheet from the cylinder and drop it onto the endless belt asthe cylinder moves backward, substantially as described.

14. The combination of the grippers L, M, their rock shafts Z, m, theintermeshing pinions on said shafts, the crank arm m springcontrolledrod m bell crank lever m cam lever m and a cam in a wheel adapted tointermittently engage said lever, substantially as and for the purposespecified.

15. The combination of the reciprocating gripper cylinder, the deliverycarriage reciprocated with said cylinder, the delivery grip pers mountedon the main frame above the carriage and adapted to grip the sheet whenthe cylinder reaches the end of its forward stroke and draw it from thecylinder onto the delivery carriage, as the cylinder and carriage movebackward, and the rock shaft on said carriage carrying tongues adaptedto whip the sheet from the stationary grippers and hold it upon thecarriage until the latter has reached the forward end of its travel,substantially as specified.

16. The combination of the reciprocating cylinder, and delivery carriagemoving therewith, an endless belt on said carriage, andmeanssubstantiallyasdescribed whereby said belt is traveled only duringthe backward movement of the cylinder; with stationary grippers adaptedto pull the imprinted sheet from the cylinder and drop it onto theendless belt as the cylinder moves backward, and the rock shaft on saidcarriage carrying tongues adapted to whip the sheet from the stationarygrippers and hold it upon the endless belt until the carriage hasreached the end of its forward travel, substantially as described.

17. The combination of the reciprocating cylinder and the reciprocatingdelivery carriage movable therewith, the endless belt running overshafts journaled in said carriage the gearing between the cylinder andthe adjoiningone of said shafts, and clutch devices substantially asdescribed whereby the shaft is rotated only when the cylinder movesbackward, and stationary grippers for transferring the sheet from thecylinder to the belt substantially as described.

18. The combination of the bed, a reciprocating cylinder and a throw offmechanism;

with a sheet delivery carriage connected to and moving with saidcylinder, endless carrying tapes mounted on said carriage, and mechanismwhereby the tapes are traveled in but one direction, and only during thenon-printing stroke of the cylinder, and means for transferring thesheet from the cylinder to the carrying tapes substantially as setforth.

19. In a sheet printing press the combination of a reciprocating grippercylinder, a throw off mechanism,asheet delivery carriage reciprocatingwith said cylinder, endless carrier tapes mounted on said carriage andmechanism whereby said tapes are traveled only during one stroke of thecylinder, and means for transferring the sheet from the cylinder to thetapes, whereby the sheet is first transferred from the cylinder to thecarriage and upon one stroke of cylinder, and then transferred fromcarriage to table upon the next similar stroke of the cylinder,substantially as and for the purpose set forth.

20. The combination of the cylinder, the carriage beside the cylinder,the shaft journaled on said carriage, the sheet carrying devicesoperated by said shaft, the ratchet fixed on the shaft, the pinion andcollar at opposite sides of said ratchet loosely mounted on the shaft,the dog pivoted on said collar, and the link pivotally connected to oneend of said dog and to the face of the pinion, and means for rotatingthe pinion as it travels with the cylinder, substantially as described.

21. The combination of the cylinder, the carriage beside the cylinder,the shaft journaled on said carriage, the sheet carrying devicesoperated by said shaft, the ratchet fixed on the shaft, the pinion andcollar at opposite sides of said ratchet loosely mounted on the shaft,the dog pivoted on said collar, and the link pivotally connected to oneend of said dog and to the face of the pinion, and means for rotatingthe pinion as it travels with the cylinder, and the friction rubber forretarding the rotation of said shaft, substantially as specified.

22. The combination of a stationary bed, reciprocating carriers, a mainshaft, crank wheels thereon, and connections for reciprocating saidcarriers; a gripper cylinder and form inking mechanism mounted on saidcarriers; the feed board and paper stops thereon; the delivery grippersand ink fountains; and the separate sets of cam levers and connectionssubstantially as described, for respectively operating the grippersegments,paper stops,--and the delivery grippers, by cams upon one ofthe crank Wheels, and the lever and connections for rotating thefountain roller, operated by a cam on the other crank wheel, allconstructed and arranged to operate substantially as and for the purposeset forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses. V

JOSEPH L. COX. Vitu esses:

ARTHUR E. DOWELL, JAMES R. MANSFIELD,

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